Question # 1

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

the length of simple pendulum of time period 1 second is

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2 m

1 m

0.5

0.25 m

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

When ever the path difference between the waves is integral multiple of half the wavelength, interference will be

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Constructive

Destructive

(-)ve

(+) ve

Sound travel faster in

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CO2

H2

O2

He

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f

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Zero

300 N

600 N

200 N

An athlete runs with a speed of 12 ms-1. Determine the longest jump he can undertake.

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12 m

14.4 m

24 m

16.2 m

The orbital angular momentum is associated with the motion of a body along

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Straight path

Circular path

Curved path

Along any path

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

The fringe spacing in a double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

The produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

Pressure of fluid will be low where speed of fluid is.

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Low

Zero

High

Constant

First law of thermodynamics can be defined by the equation

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